Rapid synthesis of pervoskites (KNbO₃, SrTiO₃) and spinel (LiMn₂O₄) in presence of α-glycine with finished end product

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• 作者：M.M. Khandpekar^a ; ^{dr_mmk1968@yahoo.com"" rel=""nofollow} ; S.P. Pati^b
• 关键词：Amorphous materials ; Ferroelectrics ; Piezoelectrics ; Surfaces ; Texture
• 刊名：Materials Letters
• 出版年：2011
• 出版时间：August 2011
• 年：2011
• 卷：65
• 期：15-16
• 页码：2439-2441
• 全文大小：476 K

文摘

Addition of Amino acid α-glycine to pervoskites like potassium niobate (KNbO₃) and strontium titanate (SrTiO₃) is seen to reduce the temperature of synthesis by several 100 degrees leading to formation of fine end product. Reduction of the grain size as much as 27 % has been recorded in KNbO₃. The XRD Intensities were found to depend on the molar proportion of glycine. The average particle size of the KNbO₃ product with glycine is found to be in order of 140–290 nm having maximum tetragonal distortion of 1.206. SrTiO₃ synthesised in presence of glycine shows needle shaped structures with reduction in white aggregates. Glycine helps in liberation of carbon dioxide with fishy odour thereby leading to the early phase formation. Studies on LiMn₂O₄ spinel used in rechargeable lithium batteries in this direction have been included.